no code implementations • 21 Aug 2023 • Marianna de Santis, Jordan Frecon, Francesco Rinaldi, Saverio Salzo, Martin Schmidt
In recent years, bilevel approaches have become very popular to efficiently estimate high-dimensional hyperparameters of machine learning models.
1 code implementation • 31 May 2023 • Sara Venturini, Andrea Cristofari, Francesco Rinaldi, Francesco Tudisco
Clustering (or community detection) on multilayer graphs poses several additional complications with respect to standard graphs as different layers may be characterized by different structures and types of information.
1 code implementation • 28 Jan 2023 • Sara Venturini, Andrea Cristofari, Francesco Rinaldi, Francesco Tudisco
Graph Semi-Supervised learning is an important data analysis tool, where given a graph and a set of labeled nodes, the aim is to infer the labels to the remaining unlabeled nodes.
no code implementations • 23 Dec 2020 • Francesco Rinaldi, Damiano Zeffiro
The analysis of Frank Wolfe (FW) variants is often complicated by the presence of different kinds of "good" and "bad" steps.
Optimization and Control 46N10, 65K05, 90C06, 90C25, 90C30
no code implementations • 18 Jul 2019 • Andrea Cristofari, Francesco Rinaldi, Francesco Tudisco
Thus we describe a new nonlinear optimization approach to solve the equivalent problem leading to a community detection strategy based on $TV_Q$.
Social and Information Networks Optimization and Control Physics and Society 49M20, 65K10, 91D30, 91C20
no code implementations • 15 Jul 2019 • Dominik Garmatter, Margherita Porcelli, Francesco Rinaldi, Martin Stoll
Optimal control problems including partial differential equation (PDE) as well as integer constraints merge the combinatorial difficulties of integer programming and the challenges related to large-scale systems resulting from discretized PDEs.
Numerical Analysis Numerical Analysis Optimization and Control 65K05, 90C06, 90C11, 93C20, 90C51